{"created":"2023-06-20T15:17:14.357630+00:00","id":47387,"links":{},"metadata":{"_buckets":{"deposit":"b95f558d-52c1-4574-867d-53fd38cbf324"},"_deposit":{"created_by":1,"id":"47387","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"47387"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00047387","sets":["1398:1399:2122","1887:1893","9:10:2065:2121"]},"author_link":["532658","532665","532661","532662","532655","532664","532659","532660","532666","532663","532657","532656"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Examination of Relabeling of Nest Label for Deep Moonquakes by Semi-supervised Learning"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-02-22","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"95","bibliographicPageStart":"87","bibliographicVolumeNumber":"JAXA-RR-20-010","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発報告: 宇宙科学情報解析論文誌: 第10号"},{"bibliographic_title":"JAXA Research and Development Report: Journal of Space Science Informatics Japan: Volume 10","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"1969年から1977年にかけて行われたNASAのアポロミッションにより，約13,000件の月震が観測された．特に，深発月震は観測された件数が最も多い種類の月震であり，同一の震源から発生した深発月震は，波形が類似していることも明らかになっている．この特性から，深発月震の波形から月震の震源を推定する研究が行われてきた．現在は，相互相関係数を用いた分類基準に基づき，それぞれの深発月震に震源ラベルが付与されている．しかし，近年の機械学習を用いた研究により，既存の分類基準に基づいた分類結果に誤りが含まれている可能性が示唆されている．そこで本研究では，機械学習を用いた手法により，誤った震源ラベルが付与されている可能性がある深発月震の抽出を行った．その後，半教師あり学習を用いて，震源ラベルの再付与を行った．実験の結果，利用したデータセット内の994件の深発月震のうち，194件の深発月震の震源ラベルが再付与された．本研究で行った深発月震の再分類結果は，専門家による現在の分類結果の再検討につながることが期待される．","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Between 1969 and 1977, about 13,000 moonquakes were observed by NASA's Apollo missions. In particular, kinds of ''deep moonquakes'' are the ones most frequently observed. Waveforms of the deep moonquakes from the same nest are similar to each other. Based on this characteristic, there have been studies to estimate the deep moonquake nests from the waveform analysis. At present, the nest-label is assigned to each deep moonquake based on the classification criteria using cross-correlation coefficients. However, more recent studies using machine learning suggest that the current method's results may contain errors. Therefore, in this paper, we extracted deep moonquakes using machine learning, which may have been given the wrong nest-labels. Furthermore, we reassign the nest-labels by semi-supervised learning. As a result, 194 out of the 994 deep moonquakes in the dataset were re-labeled. Results of the re-classification of the deep moonquakes presented in this paper may lead to a review of the current classification results by lunar experts.","subitem_description_type":"Other"}]},"item_3_description_18":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_type":"Other"}]},"item_3_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA2030022004","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-RR-20-010","subitem_description_type":"Other"}]},"item_3_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.20637/00047374","subitem_identifier_reg_type":"JaLC"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構(JAXA)"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_3_source_id_22":{"attribute_name":"ISSNONLINE","attribute_value_mlt":[{"subitem_source_identifier":"2433-2216","subitem_source_identifier_type":"ISSN"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京都立大学"},{"subitem_text_value":"宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)"},{"subitem_text_value":"会津大学"},{"subitem_text_value":"岡山理科大学"},{"subitem_text_value":"群馬大学"},{"subitem_text_value":"東京都立大学"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Tokyo Metropolitan University"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"},{"subitem_text_language":"en","subitem_text_value":"The University of Aizu"},{"subitem_text_language":"en","subitem_text_value":"Okayama University of Science"},{"subitem_text_language":"en","subitem_text_value":"Gunma University"},{"subitem_text_language":"en","subitem_text_value":"Tokyo Metropolitan University"}]},"item_3_version_type_30":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"中島, 康平"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山本, 幸生"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山田, 竜平"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"廣田, 雅春"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"荒木, 徹也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"石川, 博"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"NAKAJIMA, Kohei","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"YAMAMOTO, Yukio","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"YAMADA, Ryuhei","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"HIROTA, Masaharu","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"ARAKI, Tetsuya","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"ISHIKAWA, Hiroshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-02-22"}],"displaytype":"detail","filename":"AA2030022004.pdf","filesize":[{"value":"1.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"AA2030022004.pdf","url":"https://jaxa.repo.nii.ac.jp/record/47387/files/AA2030022004.pdf"},"version_id":"2187fd26-c557-4c88-bfb4-26333956e32c"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Self-training","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Logistic Regression","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"technical 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